Let X Represent the Number

Multiple Choice

Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.
-The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is $180,000, find each worker's salary.

A) president's salary = $90,000; department head's salary = $45,000
B) president's salary = $45,000; department head's salary = $135,000
C) president's salary = $135,000; department head's salary = $45,000
D) president's salary = $13,500; department head's salary = $4500